Gamers mark your calendars as the first of four massive Downloadable Content Pack offerings for Call of Duty: Ghosts, is on the way with Call of Duty: Ghosts Onslaught.

Onslaught debuts four unique multiplayer maps, each with their own distinct environments, small to medium scale and varied gameplay, as well as the all-new “Maverick” dual-purpose Assault Rifle/Sniper Rifle. Anchoring Call of Duty: Ghosts Onslaught is “Episode 1: Nightfall,” the first instalment in Extinction’s four-part episodic narrative that delves deeper into the storyline and features new characters, a new weapon and new alien species including a towering, three-story tall alien enemy.

Onslaught is also included as part of the Call of Duty: Ghosts DLC Season Pass, which gives fans access to four epic Call of Duty: Ghosts DLC Packs planned to release in 2014 – Onslaught, Devastation, Invasion and Nemesis. Additionally, Call of Duty Ghosts DLC Season Pass holders get instant access to the downloadable multiplayer map, “Free Fall,” as well as the Team Leader Digital Pack, which comes with a unique multiplayer character head, weapon camo, reticle, player patch, player card and player background.

“We know our fans have an appetite for new gameplay content all year long and the team here is committed to delivering a full season’s worth of amazing new maps, weapons and more, starting with Onslaught in January,” said Mark Rubin, Executive Producer at Infinity Ward. “This year will see an assortment of content for players to dig into, with new, uniquely themed maps, new multiplayer weapons and an episodic Extinction story arc that introduces new characters, new locations and new weapons as they try to uncover the genesis of the aliens’ existence.”

Call of Duty: Ghosts’ initial DLC Pack will include the first instalment in Extinction’s four-part episodic narrative, “Episode 1: Nightfall.” Introducing a narrative driven by two new characters and featuring two all-new alien species and an exclusive weapon, “Episode 1: Nightfall” is a fast and frenetic, action-packed continuation of the original Extinction experience in Call of Duty: Ghosts. Set in a remote facility hidden deep within the Alaskan wilderness, the shadowy Nightfall Program has been researching the origins of the newly revealed alien threat. A small recon team of elite soldiers must infiltrate the site to retrieve intel and exterminate the hordes of savage creatures and along the way uncover a three-story tall terror unlike anything they’ve faced before.

Call of Duty: Ghosts Onslaught is set to launch on 28th January first, exclusively on Xbox Live for both Xbox One and Xbox 360.